Timothy R Nelson (Former Employee)
Science and Products
Morphodynamic modelling of the wilderness breach, Fire Island, New York. Part I: Model set-up and validation
On October 29, 2012, storm surge and large waves produced by Hurricane 13 Sandy resulted in the formation of a breach in eastern Fire Island, NY. The goals of this study 14 are to gain a better understanding of the physical processes that govern breach behavior and 15 to assess whether process-based models can be used to forecast the evolution of future 16 breaches. The Wilderness Breach...
Authors
Maarten van Ormondt, Timothy Nelson, Cheryl Hapke, Dano Roelvink
Method for observing breach geomorphic evolution: Satellite observation of the Fire Island Wilderness breach
Satellite derived shorelines are extracted using the Google Earth Engine API for Landsat and Sentinel satellites from 1984 through 2018. These shorelines are evaluated against existing surveys and show satellite-derived breach shorelines are in good agreement with directly-observed shorelines and capture the trend of the Fire Island wilderness breach evolution. Results of this study show...
Authors
Timothy Nelson, Jennifer L. Miselis
Characterizing storm response and recovery using the beach change envelope: Fire Island, New York
Hurricane Sandy at Fire Island, New York presented unique challenges in the quantification of storm impacts using traditional metrics of coastal change, wherein measured changes (shoreline, dune crest, and volume change) did not fully reflect the substantial changes in sediment redistribution following the storm. We used a time series of beach profile data at Fire Island, New York to...
Authors
Owen T. Brenner, Erika Lentz, Cheryl J. Hapke, Rachel Henderson, Kathleen Wilson, Timothy Nelson
Morphologic evolution of the wilderness area breach at Fire Island, New York—2012–15
IntroductionHurricane Sandy, which made landfall on October 29, 2012, near Atlantic City, New Jersey, had a significant impact on the coastal system along the south shore of Long Island, New York. A record significant wave height of 9.6 meters (m) was measured at wave buoy 44025, approximately 48 kilometers offshore of Fire Island, New York. Surge and runup during the storm resulted in...
Authors
Cheryl J. Hapke, Timothy R. Nelson, Rachel E. Henderson, Owen T. Brenner, Jennifer L. Miselis
Incipient motion of sand-oil agglomerates
No abstract available.
Authors
Melanie M. A. Schippers, Niels G. Jacobsen, P. Soupy Dalyander, Timothy Nelson, Robert T. McCall
Coastal bathymetry data collected in May 2015 from Fire Island, New York—Wilderness breach and shoreface
Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, conducted a bathymetric survey of Fire Island from May 6-20, 2015. The USGS is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the wilderness breach as a part of the Hurricane Sandy Supplemental Project GS2-2B. During...
Authors
Timothy R. Nelson, Jennifer L. Miselis, Cheryl J. Hapke, Owen T. Brenner, Rachel E. Henderson, Billy J. Reynolds, Kathleen E. Wilson
Coastal bathymetry data collected in June 2014 from Fire Island, New York—The wilderness breach and shoreface
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, collected bathymetric data along the upper shoreface and within the wilderness breach at Fire Island, New York, in June 2014. The U.S. Geological Survey is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the shoreface along Fire...
Authors
Timothy R. Nelson, Jennifer L. Miselis, Cheryl J. Hapke, Kathleen E. Wilson, Rachel E. Henderson, Owen T. Brenner, Billy J. Reynolds, Mark E. Hansen
The effects of geomorphic changes during Hurricane Sandy on water levels in Great South Bay
Hurricane Sandy caused record coastal flooding along the south shore of Long Island, NY, and led to significant geomorphic changes. These included severe dune erosion along the length of Fire Island and the formation of the Wilderness Breach. This study attempts to use numerical models to quantify how these changes affected water levels inside Great South Bay during and after Hurricane...
Authors
Maarten van Ormondt, Cheryl Hapke, Dano Roelvink, Timothy R. Nelson
Shoreface response and recovery to Hurricane Sandy: Fire Island, NY
The shoreface of Fire Island was extensively modified by Hurricane Sandy and subsequent storms in the following winter months. The changes were evaluated using various morphometrics of the shoreface from four bathymetric surveys, one prior to Hurricane Sandy, and three over the course of twenty months following Sandy. The datasets show that the nearshore bar system moved offshore to...
Authors
Timothy R. Nelson, Cheryl J. Hapke
Science and Products
Morphodynamic modelling of the wilderness breach, Fire Island, New York. Part I: Model set-up and validation
On October 29, 2012, storm surge and large waves produced by Hurricane 13 Sandy resulted in the formation of a breach in eastern Fire Island, NY. The goals of this study 14 are to gain a better understanding of the physical processes that govern breach behavior and 15 to assess whether process-based models can be used to forecast the evolution of future 16 breaches. The Wilderness Breach...
Authors
Maarten van Ormondt, Timothy Nelson, Cheryl Hapke, Dano Roelvink
Method for observing breach geomorphic evolution: Satellite observation of the Fire Island Wilderness breach
Satellite derived shorelines are extracted using the Google Earth Engine API for Landsat and Sentinel satellites from 1984 through 2018. These shorelines are evaluated against existing surveys and show satellite-derived breach shorelines are in good agreement with directly-observed shorelines and capture the trend of the Fire Island wilderness breach evolution. Results of this study show...
Authors
Timothy Nelson, Jennifer L. Miselis
Characterizing storm response and recovery using the beach change envelope: Fire Island, New York
Hurricane Sandy at Fire Island, New York presented unique challenges in the quantification of storm impacts using traditional metrics of coastal change, wherein measured changes (shoreline, dune crest, and volume change) did not fully reflect the substantial changes in sediment redistribution following the storm. We used a time series of beach profile data at Fire Island, New York to...
Authors
Owen T. Brenner, Erika Lentz, Cheryl J. Hapke, Rachel Henderson, Kathleen Wilson, Timothy Nelson
Morphologic evolution of the wilderness area breach at Fire Island, New York—2012–15
IntroductionHurricane Sandy, which made landfall on October 29, 2012, near Atlantic City, New Jersey, had a significant impact on the coastal system along the south shore of Long Island, New York. A record significant wave height of 9.6 meters (m) was measured at wave buoy 44025, approximately 48 kilometers offshore of Fire Island, New York. Surge and runup during the storm resulted in...
Authors
Cheryl J. Hapke, Timothy R. Nelson, Rachel E. Henderson, Owen T. Brenner, Jennifer L. Miselis
Incipient motion of sand-oil agglomerates
No abstract available.
Authors
Melanie M. A. Schippers, Niels G. Jacobsen, P. Soupy Dalyander, Timothy Nelson, Robert T. McCall
Coastal bathymetry data collected in May 2015 from Fire Island, New York—Wilderness breach and shoreface
Scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, conducted a bathymetric survey of Fire Island from May 6-20, 2015. The USGS is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the wilderness breach as a part of the Hurricane Sandy Supplemental Project GS2-2B. During...
Authors
Timothy R. Nelson, Jennifer L. Miselis, Cheryl J. Hapke, Owen T. Brenner, Rachel E. Henderson, Billy J. Reynolds, Kathleen E. Wilson
Coastal bathymetry data collected in June 2014 from Fire Island, New York—The wilderness breach and shoreface
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida, collected bathymetric data along the upper shoreface and within the wilderness breach at Fire Island, New York, in June 2014. The U.S. Geological Survey is involved in a post-Hurricane Sandy effort to map and monitor the morphologic evolution of the shoreface along Fire...
Authors
Timothy R. Nelson, Jennifer L. Miselis, Cheryl J. Hapke, Kathleen E. Wilson, Rachel E. Henderson, Owen T. Brenner, Billy J. Reynolds, Mark E. Hansen
The effects of geomorphic changes during Hurricane Sandy on water levels in Great South Bay
Hurricane Sandy caused record coastal flooding along the south shore of Long Island, NY, and led to significant geomorphic changes. These included severe dune erosion along the length of Fire Island and the formation of the Wilderness Breach. This study attempts to use numerical models to quantify how these changes affected water levels inside Great South Bay during and after Hurricane...
Authors
Maarten van Ormondt, Cheryl Hapke, Dano Roelvink, Timothy R. Nelson
Shoreface response and recovery to Hurricane Sandy: Fire Island, NY
The shoreface of Fire Island was extensively modified by Hurricane Sandy and subsequent storms in the following winter months. The changes were evaluated using various morphometrics of the shoreface from four bathymetric surveys, one prior to Hurricane Sandy, and three over the course of twenty months following Sandy. The datasets show that the nearshore bar system moved offshore to...
Authors
Timothy R. Nelson, Cheryl J. Hapke